If youre looking for the ultimate in lightweight race bred hardtails your search is over new for 2017 the reaction gtc one12 takes our acclaimed carbon chassis and pairs it with srams ground breaking x01 eagle 1x12 transmission super fast clean shifts controlled from a single shifter leaves you to concentrate on getting the power down to the trail the result unmatched speed and control our engineers threw everything they know about carbon frame technology at the reaction gtc one12s c